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Jaw locking type positive and negative rotation drill pipe

A forward and reverse, drill pipe technology, applied in drill pipe, drill pipe, drilling equipment and other directions, can solve problems such as drill pipe thread tripping, achieve the effect of automatic loading and unloading, and improve reliability

Active Publication Date: 2021-04-16
CHINA COAL TECH ENG GRP CHONGQING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of this application is to provide a kind of interlocking stop type forward and reverse drill pipe, in order to solve the problem of thread tripping when the drill pipe rotates bidirectionally

Method used

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  • Jaw locking type positive and negative rotation drill pipe
  • Jaw locking type positive and negative rotation drill pipe
  • Jaw locking type positive and negative rotation drill pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] A kind of interlocking stop type forward and reverse drill pipe, such as Figure 1 to Figure 11 As shown, it includes a female joint 1, a rod body 2, a male joint 3, a rectangular pin 4, a sliding sleeve 5, a transmission rod 6, a positioning member 7, an elastic member 8 and a block 9, wherein the elastic member 8 is a spring.

[0053] The female joint 1 and the male joint 3 are respectively connected with the rod body 2 through coaxial friction welding to form the drill pipe body. Such as image 3 shown.

[0054] (1) female connector 1

[0055] The wall thickness of the front end of the female joint is compatible with the rod body 2, so as to ensure an appropriate wall thickness of the friction welded pipe. The middle section is provided with a sliding hole 103 that cooperates with the transmission rod 6 , and two stepped limiting holes 104 are symmetrically provided on the wall of the sliding hole 103 for installing the positioning member 7 , the spring and the cl...

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PUM

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Abstract

The invention relates to a jaw locking type positive and negative rotation drill pipe, and belongs to the technical field of coal mine drilling. The jaw locking type positive and negative rotation drill pipe comprises a pipe body, wherein a male connector is arranged on the front end of the pipe body, a female connector which can be in threaded connection with the male connector is arranged on the rear end of the pipe body, and the pipe body, the male connector and the female connector are each of a hollow structure so as to form an axially-through center hole; a transmission rod which is in sliding connection with the center hole is arranged in the center hole, and a transmission pin which penetrates through a chute formed in the male connector and is connected with a sliding sleeve which sleeves the male connector is arranged on the front end of the transmission rod; and a plurality of jaw teeth which can be matched with the rear end of the female connector and are used for circumferential locking are arranged on the front end of the sliding sleeve, the jaw teeth include a long tooth and a plurality of short teeth, the meshing length of the long tooth is h longer than that of the short teeth, and h is smaller than the matching screw pitch p of the male connector and the female connector. According to the jaw locking type positive and negative rotation drill pipe, the long teeth and the short teeth which are gradually meshed are arranged, so that accurate meshing of the meshing teeth during connection of the drill pipe is easily realized, and the reliability in connection of the drill pipe is increased.

Description

technical field [0001] The invention belongs to the technical field of coal mine drilling, and relates to an interlocking stop type forward and reverse drill pipe. Background technique [0002] In the drilling operations of various engineering holes in the underground at present, threaded connections are generally used between the front and rear two drill pipes. During the drilling construction process, the drill pipe can only rotate in the forward direction, and it will loosen if it is reversed. During the drilling process, accidents such as drill sticking and drill sticking are very easy to occur. At this time, if you try to relieve the drill sticking and drill sticking by alternating the forward and reverse directions of the drill pipe, the drill pipe will trip out and cause the drill to be lost. From the perspective of drilling technology, the drill pipe can be rotated forward and backward alternately and the hole is swept back and forth to achieve enhanced slag dischar...

Claims

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Application Information

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IPC IPC(8): E21B17/00E21B17/042E21B17/043E21B17/046
CPCE21B17/046E21B17/043E21B17/042E21B17/00
Inventor 辛德忠陈航万军蒲剑王清峰唐敏吕晋军刘小华杨林张始斋马振纲雷万年万园梅安平周富佳秦怡李淑健
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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